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Finding the Third Proportional to 292.75 and 624.50

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Solution

The third proportional to 292.75 and 624.50 is: 1,332.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    292.75 : 624.50 = 624.50 : x
  2. Step 2: Convert to fraction form
    292.75/624.50 = 624.50/x
  3. Step 3: Cross multiply
    292.75x = 624.50 × 624.50
  4. Step 4: Simplify right side
    292.75x = 390,000.25
  5. Step 5: Solve for x
    x = 390,000.25/292.75
  6. Step 6: Final answer
    x = 1,332.20

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.